Cited in: RFC 4189
10 RFCs mentioned in the text of RFC 4189 (Requirements for End-to-Middle Security for the Session Initiation Protocol (SIP))
| RFC | Title | Status | Date |
|---|---|---|---|
| 2119 | Key words for use in RFCs to Indicate Requirement Levels | Best Current Practice | March 1997 |
| 2327 | SDP: Session Description Protocol | Proposed Standard | April 1998 |
| 2617 | HTTP Authentication: Basic and Digest Access Authentication | Draft Standard | June 1999 |
| 3261 | SIP: Session Initiation Protocol | Proposed Standard | July 2002 |
| 3303 | Middlebox communication architecture and framework | Informational | August 2002 |
| 3428 | Session Initiation Protocol (SIP) Extension for Instant Messaging | Proposed Standard | December 2002 |
| 3850 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Certificate Handling | Proposed Standard | July 2004 |
| 3852 | Cryptographic Message Syntax (CMS) | Proposed Standard | July 2004 |
| 3893 | Session Initiation Protocol (SIP) Authenticated Identity Body (AIB) Format | Proposed Standard | September 2004 |
| 4119 | A Presence-based GEOPRIV Location Object Format | Proposed Standard | December 2005 |